CVE-2026-72921
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
SeaweedFS before 4.24 uses strings.HasPrefix for authorization checks, allowing a JWT scoped to /tenant1 to access sibling paths like /tenant1234, /tenant1-old, and /tenant1backup.
Risk Assessment
This enables unauthorized cross-tenant access, including read and write operations, breaking tenant isolation.
Recommendation
Update SeaweedFS to version 4.24 or later, which includes the fix.
Original NVD description (English source)
SeaweedFS is a distributed storage system. Prior to 4.24, the weed/server/filer_server_handlers.go allowed_prefixes authorization check used strings.HasPrefix on raw path strings, so a filer JWT scoped to /tenant1 also authorized sibling paths such as /tenant1234, /tenant1-old, and /tenant1backup, enabling cross-tenant reads and writes with a valid scoped token. This issue is fixed in version 4.24.